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Finding the Fourth Proportional to 26,296, 36,289.92 and 15,118.72

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Solution

The fourth proportional to 26,296, 36,289.92 and 15,118.72 is: 20,864.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,296 : 36,289.92 = 15,118.72 : x
  2. Step 2: Convert to fraction form
    26,296/36,289.92 = 15,118.72/x
  3. Step 3: Cross multiply
    26,296x = 36,289.92 × 15,118.72
  4. Step 4: Simplify right side
    26,296x = 548,657,139.30
  5. Step 5: Solve for x
    x = 548,657,139.30/26,296
  6. Step 6: Final answer
    x = 20,864.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.